This USB Host adapter cable allows you to connect a USB memory stick、 an USB 2.0 memory card reader、 or a keyboard to your Tablet !#!amp!*! Cell Phone (You must open the Dock Mode for your phone and connect the power、otherwise it cannot work) Dimensions: 13.50 in x 0.71 in x 0.39 in (34.3 cm x 1.8 cm x 1.0 cm) Weight: 0.88 oz (25 g)